Anchor



FIG. 1 is a top view of an anchor bearing the design;

FIG. 2 is a bottom-front-right perspective view of the anchor;

FIG. 3 is a top-rear-left perspective view of the anchor;

FIG. 4 is a top-front-left perspective view of the anchor; and,

FIG. 5 is a front view of the anchor, the rear view being a mirror image of the front view. 

The ornamental design for an anchor, as shown and described. 